JP2014217221A - Motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor in which sealability between a gear housing and a board case can be ensured, without increasing the number of components.SOLUTION: A connector fitting part 43a (gear housing 41) and a connector housing 51 are interconnected through openings 43b, 53 of each other. The edges of the respective openings 43b, 53 (respective opening edges 43c, 53a) are inclining to the assembly direction of the connector housing 51, and a seal member 54 is interposed between the opening edges 43c, 53a. An inclination regulation part 43f extending in the connector housing 51 via the respective openings 43b, 53 and coming into contact with the inner side face thereof is formed integrally with the connector fitting part 43a, and the inclination regulation part 43f is configured to regulate inclination of the connector housing 51 to the connector fitting part 43a.

Description

  The present invention relates to a motor used as a drive source for a vehicle power window device, for example.

  Conventionally, this type of motor is, for example, as shown in Patent Document 1, a motor unit having a rotating shaft, a gear housing that is assembled to the motor unit and that houses a speed reducing mechanism that decelerates and outputs rotation of the rotating shaft, And a board case that is assembled to the gear housing and supports the control circuit board inside. The gear housing and the board case are communicated with each other through the openings, and the control circuit board is inserted through the opening of the gear housing and extends to the inside of the gear housing. When the board case is assembled, the control circuit board is inserted into the gear housing from the opening of the gear housing, and the opening of the board case is abutted against the opening of the gear housing. The substrate case is fixed to the gear housing of the gear housing by a snap fit portion, and a seal member is interposed between the edge portions (opening edge portions) of the respective opening portions in a compressed state. Further, in the motor of Patent Document 1, since the boundary surface (each opening edge) between the gear housing and the substrate case is inclined with respect to the assembly direction of the substrate case, the area of each opening is large. Accordingly, it is easy to assemble components such as a substrate through the opening.

JP 2011-125191 A

  In the motor as described above, the opening edge portions and the seal portions of the gear housing and the substrate case are inclined with respect to the locking direction of the snap fit portion (the direction along the assembly direction of the substrate case). For this reason, the component force of the elastic force of the seal member acts in a direction orthogonal to the locking direction of the snap-fit portion, and thereby the substrate case is slightly inclined with respect to the gear housing. Then, since the space | interval of each opening edge part of a gear housing and a board | substrate case spreads partially, there existed a possibility that the sealing performance between each opening edge part might deteriorate. Therefore, in order to solve this problem, it is conceivable to firmly fix the board case and the gear housing with screws or the like. However, this solution leads to an increase in the number of parts and costs. There was still room for improvement.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a motor that can ensure the sealing performance between the gear housing and the board case without increasing the number of parts. There is to do.

  A motor that solves the above problems includes a motor unit having a rotation shaft, a gear housing that is assembled to the motor unit and that decelerates and outputs rotation of the rotation shaft, and snaps to the gear housing. A board case that is fixed at the fitting part and supports the control circuit board inside, and the gear housing and the board case are communicated with each other through an opening part, and an edge part of each opening part A motor that is inclined with respect to the assembly direction of the substrate case and in which a seal member is interposed between the edges thereof, wherein one of the gear housing and the substrate case is connected to the other via the openings. A tilt restricting portion that extends to the side and contacts the other inner surface is integrally formed, and the tilt restricting portion is configured to restrict the tilt of the substrate case with respect to the gear housing. It is.

  According to this configuration, since the tilt restricting portion receives the elastic force component of the seal member, the tilt of the substrate case with respect to the gear housing is restricted. Thereby, it is suppressed that the space | interval of the edge part of each opening part of a gear housing and a board | substrate case spreads partially, As a result, the sealing performance between a gear housing and a board | substrate case is securable. Further, since the tilt restricting portion is integrally formed with the gear housing or the substrate case, the sealing performance between the gear housing and the substrate case can be ensured without increasing the number of parts.

In the motor, it is preferable that the board case constitutes a connector module connected to the outside.
According to this structure, the sealing performance between the substrate case and the gear housing that constitute the connector module can be ensured.

  In the motor, the connector module includes a connector side terminal that is elastically connected to the power supply terminal on the motor unit side when the board case is assembled to the gear housing, and the tilt restricting portion is the other side. It is preferable that the connector-side terminal and the power supply terminal are elastically connected after being brought into contact with the inner surface.

  According to this configuration, since the connector side terminal and the power supply terminal are elastically connected after the board case is positioned by the tilt restricting portion, the connector side terminal that may be generated due to the positional deviation between the board case and the gear housing. It is possible to suppress poor connection between the power supply terminals.

  According to the motor of the present invention, the sealing performance between the gear housing and the substrate case can be ensured without increasing the number of parts.

It is a front view of the motor of an embodiment. It is the top view which looked at the motor part from the gear housing side. It is a front view which shows the motor of the state which removed the connector module. It is a top view which shows a motor partially. It is a front view which shows partially the motor of the state which removed the connector module. It is a schematic diagram which shows the cross-sectional structure of a tilt control part vicinity. It is the side view which looked at the connector module from the motor flat direction. It is the rear view which looked at the connector module from the motor thickness direction. It is a front view which expands and shows the connector boot part of a connector module. FIG. 10 is a sectional view taken along line AA in FIG. 9.

Hereinafter, an embodiment of the motor will be described.
A motor 1 according to this embodiment shown in FIG. 1 is used as a drive source of a power window device that lifts and lowers a window glass of a vehicle electrically. The motor 1 is assembled to the motor unit 2 located in the upper part in FIG. 1, the speed reduction part 3 provided on the output side (lower side) of the motor part 2, and the side of the speed reduction part 3 (left side in FIG. 1). Connector module 4 formed. As a whole, the motor 1 has a flat shape with a thin thickness in one direction (direction orthogonal to the paper surface in FIG. 1) orthogonal to the axis of the motor unit 2 (axis L1 of the rotating shaft 13). The longitudinal direction (left-right direction in FIG. 1) when the motor 1 is viewed from the axial direction is defined as a flat direction, and the short direction (direction perpendicular to the paper surface in FIG. 1) is defined as a thickness direction. That is, the axial direction, the flat direction, and the thickness direction of the motor 1 are directions orthogonal to each other.

[Configuration of motor section]
A yoke housing 11 of the motor unit 2 (hereinafter simply referred to as a yoke 11) has a bottomed cylindrical shape with a non-output side end (upper end in FIG. 1) closed. The output-side end 11a of the yoke 11 opens in the axial direction (lower side in FIG. 1) of the motor 1, and a flange 11b extending outward in the radial direction is formed at the output-side end 11a. ing. A magnet (not shown) is fixed to the inner peripheral surface of the yoke 11, and an armature 12 is disposed inside the magnet.

  The armature 12 is wound around the armature core 14, a columnar rotation shaft 13 disposed at the radial center of the yoke 11, an armature core 14 fixed to the rotation shaft 13 so as to be integrally rotatable. Coil 15 and a commutator 16 fixed to the front end side (lower end side in FIG. 1) of armature core 14 on rotating shaft 13.

  A base end portion (upper end portion in FIG. 1) of the rotating shaft 13 is pivotally supported by a bearing (not shown) provided at the bottom center of the yoke 11. Further, the tip end portion of the rotary shaft 13 protrudes from the opening of the output side end portion 11 a of the yoke 11 to the outside of the yoke 11. The armature core 14 is fixed to a portion of the rotating shaft 13 disposed inside the yoke 11 and faces the magnet (not shown) in the radial direction.

  The commutator 16 is externally fitted and fixed to a portion of the rotating shaft 13 that protrudes from the yoke 11 to the outside. Thereby, the commutator 16 is arranged outside the yoke 11 and is configured to be rotatable integrally with the rotary shaft 13. The commutator 16 has a cylindrical shape, and a plurality of segments 16a are arranged in parallel on the outer peripheral surface thereof so as to be separated in the circumferential direction. Some or all of the segments 16a are electrically connected to the coil 15. That is, power can be supplied to the coil 15 via the segment 16 a of the commutator 16.

  As shown in FIG. 2, the motor unit 2 includes a resin brush holder 21 at the output side end portion 11 a of the yoke 11. The brush holder 21 has a flat base portion 22 located outside the output side end portion 11a of the yoke 11, and the base portion 22 is slightly larger in size in the axis-perpendicular direction than the opening of the output side end portion 11a. Largely formed. Further, an elastic member 23 is provided on the outer edge portion of the base portion 22 to ensure liquid tightness between a gear housing 41 and a yoke 11 of the speed reduction portion 3 to be described later. The elastic member 23 is made of, for example, an elastomer.

  A commutator housing portion 24 is formed integrally with the base portion 22 at the central portion of the base portion 22 so as to protrude toward the side opposite to the yoke in the axial direction. The commutator 16 is disposed inside the commutator housing 24. Thus, the outer periphery of the commutator 16 and the end surface on the side opposite to the yoke in the axial direction are covered with the commutator housing 24. The rotating shaft 13 is configured such that a tip portion thereof protrudes from the commutator housing portion 24.

  The brush holder 21 is integrally formed with a pair of brush housing portions 25 extending radially outward from the commutator housing portion 24. The pair of brush accommodating portions 25 are provided so as to be line symmetric with respect to the center line in the thickness direction of the motor portion 2. Each brush accommodating portion 25 is also integrated with the base portion 22. Each brush accommodating part 25 is connected with the inside of the commutator accommodating part 24, and the electric power supply brush 26 is accommodated in the inside of each brush accommodating part 25 so that a movement to radial direction is possible. The tip end portion (radially inner end portion) of the power supply brush 26 is configured to contact the outer peripheral surface of the commutator 16 in the commutator housing portion 24. The commutator housing portion 24 suppresses the scattering of the brush powder generated when the power supply brush 26 is scraped by sliding contact with the commutator 16.

  Between the circumferential directions of the pair of brush housing portions 25, a pair of support column portions 31 protruding from the base portion 22 to the axially opposite yoke side (gear housing 41 side) is formed. The pair of support pillars 31 are formed so as to be line-symmetric with respect to the center line in the thickness direction of the motor unit 2, similarly to the brush housing unit 25. Each support column 31 has a circular cross section, and a coil portion of a torsion spring 32 that biases the power supply brush 26 radially inward (that is, the commutator 16 side) is extrapolated to each support column 31. Is retained. Each support column 31 abuts the gear housing 41 in the axial direction and the radial direction, and serves to position the gear housing 41 in the axial direction and the radial direction.

  In the brush holder 21, the arrangement side of the brush accommodating portion 25 and the support column portion 31 is one side in the flat direction, and a pair of choke coils 33 and a pair of power supply terminals 34 are provided on the other side in the opposite flat direction. . The choke coil 33 and the power supply terminal 34 are configured to be line symmetric with respect to the center line in the thickness direction of the motor unit 2. Each power supply terminal 34 is electrically connected to a corresponding power supply brush 26 via a choke coil 33. The choke coil 33 is a noise prevention element for removing noise included in the power supply supplied to the armature 12. The power supply terminal 34 is formed from a single metal plate and includes an insertion portion 34a connected to a connector side terminal 59 described later. The insertion portion 34a has a planar shape parallel to the flat surface of the motor 1 (a plane orthogonal to the thickness direction).

[Configuration of deceleration unit]
As shown in FIG. 1, the speed reduction unit 3 includes a gear housing 41 and a speed reduction mechanism 42 accommodated in the gear housing 41. The gear housing 41 includes a holder housing portion 43 that is fixed to the flange portion 11b of the yoke 11, and a worm shaft housing portion 44 that extends from the holder housing portion 43 in the direction opposite to the yoke 11 along the axis L1 direction of the rotary shaft 13. The wheel housing portion 45 is formed to extend from the worm shaft housing portion 44 to the side in the flat direction (right side in FIG. 1).

  The gear housing 41 is fixed to the yoke 11 by fixing a holder housing portion 43 that is in contact with the flange portion 11 b in the axial direction to the flange portion 11 b by a plurality of screws 46. Inside the holder accommodating portion 43, a portion on the distal end side of the rotating shaft 13 enters and the commutator 16 is disposed. Further, inside the holder housing portion 43, portions that protrude from the output side end portion 11 a of the yoke 11 in the brush holder 21 such as the commutator housing portion 24, the brush housing portion 25, and the power supply terminals 34 to the outside of the yoke 11. Has entered.

  A substantially cylindrical worm shaft 47 is accommodated in the worm shaft accommodating portion 44. A screw-like worm portion 47 a is formed at a substantially central portion in the axial direction of the worm shaft 47. The worm shaft 47 is disposed coaxially with the rotation shaft 13 (arranged so that the center axes thereof coincide with each other) and is rotatably supported within the worm shaft housing portion 44.

  The worm shaft 47 and the rotary shaft 13 are connected via a clutch 48 disposed in the holder housing portion 43. The clutch 48 is connected to a driving side rotating body 48a fixed to the tip end of the rotating shaft 13 and is connected to the driving side rotating body 48a so as to be integrally rotatable, and at one end in the axial direction of the worm shaft 47 (the upper end in FIG. 1). Part) and a driven side rotating body 48b. The clutch 48 operates so as to transmit the rotation of the driving side rotating body 48a to the driven side rotating body 48b, while not transmitting the rotational force of the driven side rotating body 48b to the driving side rotating body 48a. That is, the clutch 48 outputs the rotational input from the rotating shaft 13 side to the worm shaft 47 side, and blocks the rotational input from the worm shaft 47 side.

  The internal space of the wheel housing portion 45 is connected to the internal space of the worm shaft housing portion 44. A disc-shaped worm wheel 49 that meshes with the worm portion 47 a is accommodated inside the wheel accommodating portion 45. The worm shaft 47 and the worm wheel 49 constitute a speed reduction mechanism 42. The worm wheel 49 is disposed so that the rotation axis L2 thereof is parallel to the motor thickness direction, and is rotatably supported by the wheel housing portion 45. The worm wheel 49 has a flat disk shape with a small thickness in the direction of the axis L2. An output shaft 50 extending along the axial direction of the worm wheel 49 is provided at the central portion of the worm wheel 49 so as to be able to rotate integrally with the worm wheel 49. The front end portion of the output shaft 50 protrudes outside the gear housing 41, and the window glass of the vehicle is connected to the front end portion of the output shaft 50 via a window regulator (not shown).

  Here, an annular sensor magnet 17 is fixed to the driving side rotating body 48a of the clutch 48 described above. The sensor magnet 17 is coaxial with the axis L1 of the rotary shaft 13, and has a rectangular cross section along the radial direction. The sensor magnet 17 is configured to be able to rotate integrally with the rotating shaft 13 and the driving side rotating body 48a.

  As shown in FIGS. 3, 4, and 5, the gear housing 41 is formed with a connector mounting portion 43 a that extends from the holder housing portion 43 to one side in the flat direction (on the side opposite to the wheel housing portion). The inside of the connector mounting portion 43a communicates with the inside of the holder housing portion 43 and opens to one side in the flat direction (on the side opposite to the wheel housing portion), and the edge portion (opening edge portion 43c) of the opening portion 43b In addition to a rectangular shape when viewed from the opening direction, the shape is linear when viewed from the direction of the axis L1 (see FIG. 5). Further, the opening edge 43c is parallel to the direction of the axis L1 and is inclined with respect to the motor flat direction. More specifically, the opening edge 43c is inclined so that the length of the connector mounting portion 43a in the motor flat direction becomes shorter as it goes toward the connector boot 56b described later.

[Configuration of connector section]
As shown in FIG. 1, the connector module 4 attached to the connector mounting portion 43 a extends to one side in the flat direction with respect to the axis L <b> 1 of the rotating shaft 13 (the side opposite to the extending direction of the wheel housing portion 45). It is configured to issue.

  As shown in FIGS. 1 and 4, the connector module 4 includes a resin connector housing 51 fixed to the connector mounting portion 43 a. Locking pieces 52 extending toward the gear housing 41 are formed on both end surfaces of the connector housing 51 in the motor axial direction (axial line L1 direction). Each locking piece 52 is locked to a locking projection 43d formed on each end surface of the connector mounting portion 43a in the direction of the axis L1. The locking piece 52 and the locking projection 43d are locked to each other by a snap fit. That is, by assembling the connector housing 51 with respect to the connector mounting portion 43a in the motor flat direction (assembly direction X), the locking piece 52 is bent and hooked on the locking projection 43d, whereby the connector housing 51 is connected to the connector. It is fixed to the attachment portion 43a.

  As shown in FIGS. 4, 7, and 8, the connector housing 51 is open to the gear housing 41 side in the motor flat direction, and the edge portion (opening edge portion 53a) of the opening portion 53 is a connector mounting portion. It is formed in a shape corresponding to the opening edge 43c of 43a. That is, the opening edge portion 53a has a rectangular shape when viewed from the opening direction, and a linear shape when viewed from the direction of the axis L1. The opening edge 53a is parallel to the direction of the axis L1 and is inclined in the same direction as the opening edge 43c with respect to the motor flat direction. As a result, the opening area of the opening 53 can be increased, so that internal components (such as a control circuit board 61 described later) of the connector housing 51 can be easily assembled via the opening 53. It has become.

  A seal member 54 made of an elastic body is embedded in the opening edge 53 a of the connector housing 51. The seal member 54 is provided in an annular shape along the opening edge 53a, and a part thereof is provided so as to protrude from the opening edge 53a toward the gear housing 41 in the motor flat direction. On the other hand, the opening edge 43c on the gear housing 41 side (connector mounting portion 43a) is formed with a convex portion 43e that protrudes toward the connector housing 51 in the motor flat direction. The convex portion 43e is formed in an annular shape along the opening edge portion 43c.

  As shown in FIG. 6, in the assembled state of the connector housing 51, the convex portions 43 e are in close contact with each other while crushing the seal member 54, thereby sealing between the opening edge portions 43 c and 53 a. .

  As shown in FIGS. 7 and 8, the connector housing 51 is formed with a positioning projection 55 that protrudes toward the gear housing 41 in the motor flat direction via the inside of the opening edge 53a. The positioning projection 55 is inserted into a positioning hole (not shown) formed in the connector mounting portion 43a, whereby the connector housing 51 is positioned with respect to the connector mounting portion 43a.

  As shown in FIGS. 3, 5 and 6, the connector mounting portion 43a is formed with a tilt restricting portion 43f extending from the inside of the opening edge portion 43c to the connector housing 51 side. The tilt restricting portion 43f is formed on the side wall 43h on the anti-connector boot side in the thickness direction of the connector mounting portion 43a, and two are formed along the motor shaft direction (see FIG. 3). The tilt restricting portion 43 f enters the inside of the connector housing 51 through the opening 43 b on the gear housing 41 side (connector mounting portion 43 a) and the opening 53 on the connector housing 51 side, and also on the inner side surface 51 a of the connector housing 51. On the other hand, it contacts in the motor thickness direction (see FIG. 6).

  As shown in FIG. 4, a guide portion 43g is formed on the side opposite to the connector boot in the thickness direction of the connector mounting portion 43a so as to protrude from the opening edge portion 43c to the side opposite to the motor portion in the flat direction. . The guide portion 43g is in contact with the outer surface 51b of the connector housing 51 on the anti-connector boot side (short side) in the thickness direction in the motor thickness direction. In addition, it is comprised so that the edge part by the side of the anti-connector boot of each opening edge part 43c, 53a and the sealing member 54 may be located between the guide part 43g and the tilt control part 43f in the motor thickness direction.

  On one side surface of the connector housing 51 in the thickness direction, an external connection portion 56 is formed extending in the thickness direction. As shown in FIG. 1, an insertion hole 56 a extending into the connector housing 51 is recessed in the external connection portion 56. The insertion hole 56a is recessed so as to be recessed in the thickness direction, and the inner peripheral surface thereof has a shape corresponding to the external shape of an external connector (not shown) inserted into the insertion hole 56a. Further, the outer periphery of the external connection portion 56 is surrounded by a substantially cylindrical connector boot 56b. The connector boot 56b is for preventing water from entering the insertion hole 56a. The connector boot 56b of this embodiment is formed of an elastomer and is integrally formed with the connector housing 51.

  Further, as shown in FIGS. 9 and 10, the center O1 of the external connection portion 56 (insertion hole 56a) is offset to one side (gear housing 41 side) in the motor flat direction with respect to the center O2 of the connector boot 56b. On the other side in the flat direction of the external connection portion 56, a hook portion 57 having a snap fit structure that is locked to the external connector is formed. The hook portion 57 is locked to the external connector by inserting the external connector into the insertion hole 56a, whereby the external connector is fixed to the insertion hole 56a. Further, the center O1 of the insertion hole 56a is offset to the opposite hook portion side with respect to the center O2 of the connector boot 56b, so that the gap between the hook portion 57 and the inner peripheral edge 56c of the connector boot 56b can be increased. It has become. For this reason, it becomes easy to remove the hook part 57 from an external connector, As a result, it can contribute to the improvement of an assembly | attachment property.

  As shown in FIGS. 7 and 8, a flat control circuit board 61 is fixed to the connector housing 51. A part of the control circuit board 61 extends from the inside of the opening edge 53a to the gear housing 41 side. The connector housing 51 is formed with a pair of positioning portions 51c extending in the motor thickness direction, and the control circuit board 61 is penetrated by the positioning portion 51c. For example, the tip of one positioning portion 51c is deformed by heat. It is fixed while being positioned by the positioning part 51c by (caulking heat).

  The control circuit board 61 is provided such that its plate surface is orthogonal to the motor thickness direction. In other words, the control circuit board 61 is provided such that its plate surface is parallel to the flat surface of the motor 1. As a result, it is possible to reduce the size of the control circuit board 61 in the motor thickness direction while ensuring a flat area. The control circuit board 61 is disposed so as to face the sensor magnet 17 in the motor flat direction. That is, the control circuit board 61 is configured to be within the width of the sensor magnet 17 in the motor thickness direction, and as a result, the motor 1 is downsized in the thickness direction.

  A part of the control circuit board 61 extends to the side of the external connection portion 56 in the motor thickness direction. Here, a plurality of connector terminals 58 are embedded in the external connection portion 56 by insert molding. Each connector terminal 58 has one end connected to the control circuit board 61 and the other end protruding into the internal space of the insertion hole 56 a of the external connection portion 56. And the other end part of each connector terminal 58 is connected with the said external connector inserted in the insertion hole 56a. Then, through this external connector, input / output of electric signals to the motor 1 and power feeding are performed.

  As shown in FIG. 7, on the surface 61a of the control circuit board 61 (the plate surface on the connector boot 56b side), a Hall IC 62 as a rotation detecting element, a control circuit 63, a relay circuit 64 as a drive circuit, A capacitor 65 as a protection element is surface-mounted. The relay circuit 64 and the capacitor 65 are arranged in a space formed below the external connection portion 56 in the axial direction.

  As shown in FIGS. 2 and 8, the control circuit board 61 is formed with an extending portion 61b at the same position as the sensor magnet 17 in the motor axial direction. The extending portion 61b extends toward the sensor magnet 17 in the motor flat direction, and its tip faces the outer peripheral surface of the sensor magnet 17 in the motor flat direction. The extension portion 61b is provided with a Hall IC 62. That is, the extending portion 61 b is a portion that is formed to extend so that the Hall IC 62 is disposed close to the sensor magnet 17.

  The Hall IC 62 is provided at the same position as the sensor magnet 17 in the motor shaft direction. The Hall IC 62 alternately detects a first magnetic field (longitudinal magnetic field) entering the vertical direction on the surface (a surface parallel to the surface 61a of the control circuit board 61) and a second magnetic field (transverse magnetic field) entering the horizontal direction. Then, pulse signals are generated based on these magnetic fields. The Hall IC 62 outputs the two-phase pulse signal to the control circuit 63. In the state where the sensor magnet 17 rotates, the pulse signal obtained from the first magnetic field and the pulse signal obtained from the second magnetic field change with a phase difference of 90 degrees (electrical angle). The control circuit 63 detects rotation information (rotation position (rotation angle), rotation direction, rotation speed, etc.) of the sensor magnet 17 (that is, the rotation shaft 13) based on the two-phase pulse signal. Then, the control circuit 63 controls the relay circuit 64 based on the rotation information of the rotating shaft 13 and supplies a drive current to the armature 12. Thereby, the desired rotation of the armature 12 is realized.

  As shown in FIG. 7, a pair of connector-side terminals 59 (tuning fork terminals) are fixed to the connector housing 51. Each connector side terminal 59 is connected to the control circuit board 61 from the surface 61a side. Each connector-side terminal 59 is bent into a predetermined shape, and a bifurcated connection portion 59a extending toward the rotating shaft 13 in the motor flat direction is formed at the tip of each connector-side terminal 59. The bifurcated connection portions 59a of the connector side terminals 59 are provided at the same position in the axial direction and are arranged in the motor thickness direction.

  As shown in FIG. 2, an insertion portion 34 a of the power supply terminal 34 disposed in the gear housing 41 is inserted into each bifurcated connection portion 59 a. The bifurcated connection portion 59a sandwiches the insertion portion 34a in the motor thickness direction by its own elastic force, and thereby the connector side terminal 59 and the power supply terminal 34 are electrically connected.

  In the motor 1, the armature 12 is connected from the external connector inserted into the insertion hole 56 a of the external connection portion 56 through the connector terminal 58, the control circuit board 61, the connector side terminal 59, and the power supply terminal 34 of the brush holder 21. When power is supplied to the armature 12, the armature 12 (rotating shaft 13) is driven to rotate.

Next, assembly of the connector module 4 will be described.
When the connector module 4 is assembled along the motor flat direction (assembly direction X) with respect to the connector mounting portion 43a of the gear housing 41, the positioning projection 55 on the connector module 4 side first has the positioning hole of the connector mounting portion 43a. (Not shown). Thereby, the connector module 4 is positioned in a direction perpendicular to the assembly direction X.

  Thereafter, when the connector module 4 is pushed in the assembly direction X, the tilt restricting portion 43f of the connector mounting portion 43a enters the connector housing 51 and is brought into contact with the inner side surface 51a of the connector housing 51 in the motor thickness direction. The

  Thereafter, when the connector module 4 is further pushed in the assembly direction X, the insertion portion 34 a of the power supply terminal 34 is inserted into the bifurcated connection portion 59 a of each connector side terminal 59. Thereby, the forked connection part 59a is electrically connected by pinching the insertion part 34a in the motor thickness direction by its own elastic force.

  When the connector module 4 is further pushed in the assembling direction X after the bifurcated connecting portion 59a and the power supply terminal 34 are connected, each locking piece 52 of the connector housing 51 is moved to each locking projection 43d of the gear housing 41. The connector housing 51 is fixed to the gear housing 41 by being elastically locked (locked by snap fitting).

  As described above, after the connector housing 51 is positioned by the positioning protrusion 55 and the tilt restricting portion 43f, the bifurcated connecting portion 59a and the power supply terminal 34 are elastically contacted to be electrically connected. For this reason, poor connection between the bifurcated connection portion 59a and the power supply terminal 34, which may be caused by a positional shift between the connector housing 51 and the gear housing 41, is suppressed.

Next, the operation of this embodiment will be described.
As shown in FIG. 4, the interface (each opening edge 43c, 53a) between the connector mounting portion 43a (gear housing 41) and the connector housing 51 is inclined with respect to the motor flat direction (assembly direction X). Yes. For this reason, the elastic force F received by the connector housing 51 from the seal member 54 interposed between the opening edges 43c and 53a is perpendicular to the boundary surface (opening edges 43c and 53a), that is, is locked. It is oblique to the locking direction (direction along the assembly direction X) between the piece 52 and the locking projection 43d. Of the component force of the elastic force F, the component force Fa in the motor flat direction is received by the locking projection 43d via the locking piece 52, but the component force Fb in the motor thickness direction is applied to the connector housing 51. , Acting as a force for tilting to the connector boot 56b side (long side of the connector housing 51) with the locking projection 43d as a fulcrum.

  Here, in this embodiment, since the tilt restricting portion 43f extending from the connector mounting portion 43a is in contact with the inner side surface 51a of the connector housing 51 in the motor thickness direction (see FIG. 6), the tilt restricting portion 43f is A force (component force Fb) for tilting the connector housing 51 toward the connector boot 56b is received. As a result, the inclination of the connector housing 51 with respect to the connector mounting portion 43a is restricted, and as a result, the distance between the opening edge portions 43c and 53a opens on the anti-connector boot side (the short side of the connector housing 51) and the sealing performance deteriorates. This is prevented.

Next, characteristic effects of the present embodiment will be described.
(1) The connector mounting portion 43a is integrally formed with a tilt regulating portion 43f that extends into the connector housing 51 through the openings 43b and 53 and contacts the inner side surface 51a. The tilt restricting portion 43f is configured to restrict the tilt of the connector housing 51 with respect to the connector mounting portion 43a. Thereby, it is suppressed that the space | interval of each opening edge part 43c, 53a spreads partially, As a result, the sealing performance between the connector attachment part 43a and the connector housing 51 is securable. Further, since the tilt restricting portion 43f is integrally formed with the connector mounting portion 43a (gear housing 41), it is possible to ensure the sealing performance between the opening edge portions 43c and 53a without increasing the number of parts. Can do.

  (2) The connector module 4 includes a connector side terminal 59 that is elastically connected to the power supply terminal 34 on the motor unit 2 side when the connector housing 51 is assembled to the connector mounting portion 43a. The connector side terminal 59 and the power supply terminal 34 are configured to be elastically connected after the tilt restricting portion 43f is in contact with the inner side surface 51a of the connector housing 51. According to this configuration, after the connector housing 51 is positioned by the tilt restricting portion 43f, the connector-side terminal 59 and the power supply terminal 34 are elastically connected, so the position of the connector housing 51 and the connector mounting portion 43a. It is possible to suppress a connection failure between the connector side terminal 59 and the power supply terminal 34 that may be caused by the shift.

  (3) Since the opening 53 (opening edge 53 a) of the connector housing 51 is inclined in the motor thickness direction so as to face the anti-connector boot side, internal components such as the control circuit board 61 are inserted through the opening 53. Thus, it can be easily assembled from the thickness direction of the motor.

In addition, you may change the said embodiment as follows.
In the above embodiment, the locking pieces 52 are provided on both sides of the connector housing 51 in the motor axial direction (axis L1 direction), but may be provided on both sides in the motor thickness direction, for example.

  In the above embodiment, the connector mounting portion 43a and the opening edge portions 43c and 53a of the connector housing 51 are configured to be inclined in the motor thickness direction (that is, parallel to the motor shaft direction). However, the present invention is not particularly limited thereto, and for example, it may be configured to be inclined in the motor shaft direction.

  -The configuration of the shape, the formation location, the number, etc., of the tilt restricting portion 43f is not limited to the above embodiment, and any configuration that can receive the elastic force of the seal member 54 from the tilt restricting portion 43f. You may change suitably to another structure.

  For example, in the above embodiment, the tilt restricting portion 43f is integrally formed on the gear housing 41 side (connector mounting portion 43a). However, the tilt restricting portion is integrally formed on the connector housing 51 side, and the tilt restricting portion is the connector mounting portion 43a. You may comprise so that it may contact | abut with the inner surface.

  Further, for example, in the above embodiment, the tilt restricting portion 43f is formed on the inner surface of the side wall 43h on the anti-connector boot side in the connector mounting portion 43a. Depending on the direction of inclination, for example, a configuration in which the tilt regulating portion is formed on the inner surface of the side wall of the connector mounting portion 43a on the connector boot 56b side is also conceivable.

Further, for example, the tilt restricting portion may be formed in an annular shape along the opening edge portion 43c.
In the above embodiment, the locking piece 52 is formed on the connector housing 51 and the locking projection 43d is formed on the connector mounting portion 43a. On the contrary, the locking piece is formed on the connector mounting portion 43a. A stop protrusion may be formed in the connector housing 51.

The snap-fit structure of the locking piece 52 and the locking projection 43d is not limited to the above embodiment, and the shape or the like can be changed as appropriate as long as it can be locked using elasticity. Good.
In the above embodiment, the connector module 4 is configured to be assembled in the direction perpendicular to the axis (motor flat direction) with respect to the gear housing 41. However, for example, the connector module 4 may be configured to be assembled in the motor axial direction.

  In the above embodiment, the present invention is applied to the motor 1 used as a drive source of the power window device, but may be applied to a motor used as a drive source of a vehicle wiper device other than the power window device.

Next, a technical idea that can be grasped from the above embodiment and another example will be added below.
(A) The motor characterized in that the opening of the connector housing is inclined in the motor thickness direction so as to face the anti-connector boot side.

As a result, it becomes possible to easily assemble the internal components (control circuit board and the like) of the board case from the motor thickness direction through the opening.
(B) In the motor of appendix (A), the board case has a locking piece as a snap-fit portion extending to the gear housing side,
The tilt restricting portion is formed on a side wall on the side opposite to the connector boot in the substrate case or the gear housing.

  Thereby, it can be set as the structure which can receive suitably the tilting restriction | limiting part (force which tilts a board | substrate case to the connector boot side) of the elastic force of a sealing member.

  DESCRIPTION OF SYMBOLS 1 ... Motor, 2 ... Motor part, 4 ... Connector module, 13 ... Rotating shaft, 34 ... Feeding terminal, 41 ... Gear housing, 42 ... Reduction mechanism, 43b, 53 ... Opening part, 43c, 53a ... Opening edge part, 43f DESCRIPTION OF SYMBOLS ... Tilt regulation part, 51 ... Connector housing (board case), 51a ... Inner side surface, 52 ... Locking piece (snap fitting part), 54 ... Seal member, 59 ... Connector side terminal, 61 ... Control circuit board, X ... Set Direction.

Claims (3)

A motor unit having a rotating shaft;
A gear housing that is assembled to the motor unit and accommodates a reduction mechanism that decelerates and outputs the rotation of the rotary shaft;
A board case that is fixed to the gear housing at a snap-fit portion and supports a control circuit board therein, and the gear housing and the board case are communicated with each other through an opening. A motor in which an edge of the opening is inclined with respect to the assembly direction of the substrate case, and a seal member is interposed between the edges,
One of the gear housing and the board case is integrally formed with a tilt restricting portion that extends to the other side through the openings and contacts the other inner surface. A motor that restricts tilting of the substrate case with respect to a housing. The motor according to claim 1,
The motor, wherein the board case constitutes a connector module connected to the outside. The motor according to claim 2,
The connector module includes a connector-side terminal that is elastically connected to the power supply terminal on the motor unit side when the board case is assembled to the gear housing.
The motor, wherein the connector side terminal and the power supply terminal are elastically connected after the tilt restricting portion comes into contact with the other inner surface.